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Fix preview image text wrap length

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Closes #1634
This commit is contained in:
Joachim 2021-12-04 19:08:55 +01:00
parent 41fbfb627e
commit 5e9e7db935
1 changed files with 29 additions and 4 deletions
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33
bookwyrm/preview_images.py
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@ -49,6 +49,25 @@ def get_font(font_name, size=28):
return font
def get_wrapped_text(text, font, content_width):
"""text wrap length depends on the max width of the content"""
low = 0
high = len(text)
# ideal length is determined via binary search
while low < high:
mid = math.floor(low + high)
wrapped_text = textwrap.fill(text, width=mid)
width = font.getsize_multiline(wrapped_text)[0]
if width < content_width:
low = mid
else:
high = mid - 1
return wrapped_text
def generate_texts_layer(texts, content_width):
"""Adds text for images"""
font_text_zero = get_font("bold", size=20)
@ -63,7 +82,8 @@ def generate_texts_layer(texts, content_width):
if "text_zero" in texts and texts["text_zero"]:
# Text one (Book title)
text_zero = textwrap.fill(texts["text_zero"], width=72)
text_zero = get_wrapped_text(texts["text_zero"], font_text_zero, content_width)
text_layer_draw.multiline_text(
(0, text_y), text_zero, font=font_text_zero, fill=TEXT_COLOR
)
@ -75,7 +95,8 @@ def generate_texts_layer(texts, content_width):
if "text_one" in texts and texts["text_one"]:
# Text one (Book title)
text_one = textwrap.fill(texts["text_one"], width=28)
text_one = get_wrapped_text(texts["text_one"], font_text_one, content_width)
text_layer_draw.multiline_text(
(0, text_y), text_one, font=font_text_one, fill=TEXT_COLOR
)
@ -87,7 +108,8 @@ def generate_texts_layer(texts, content_width):
if "text_two" in texts and texts["text_two"]:
# Text one (Book subtitle)
text_two = textwrap.fill(texts["text_two"], width=36)
text_two = get_wrapped_text(texts["text_two"], font_text_two, content_width)
text_layer_draw.multiline_text(
(0, text_y), text_two, font=font_text_two, fill=TEXT_COLOR
)
@ -99,7 +121,10 @@ def generate_texts_layer(texts, content_width):
if "text_three" in texts and texts["text_three"]:
# Text three (Book authors)
text_three = textwrap.fill(texts["text_three"], width=36)
text_three = get_wrapped_text(
texts["text_three"], font_text_three, content_width
)
text_layer_draw.multiline_text(
(0, text_y), text_three, font=font_text_three, fill=TEXT_COLOR
)